|Pos|No|Driver|Constructor|Laps|Time/Retired|Grid|Points|
|---|---|---|---|---|---|---|---|
|1|1|Emerson Fittipaldi|McLaren-Ford|53|1:39:26.29|5|9|
|2|24|James Hunt|Hesketh-Ford|53|+ 5.91|6|6|
|3|7|Carlos Reutemann|Brabham-Ford|53|+ 17.06|3|4|
|4|11|Clay Regazzoni|Ferrari|53|+ 35.79|7|3|
|5|4|Patrick Depailler|Tyrrell-Ford|53|+ 54.25|8|2|
|6|12|Niki Lauda|Ferrari|53|+ 1:19.65|4|1|
|7|28|Mark Donohue|Penske-Ford|52|+ 1 Lap|16||
|8|6|Jacky Ickx|Lotus-Ford|52|+ 1 Lap|18||
|9|9|Vittorio Brambilla|March-Ford|52|+ 1 Lap|12||
|10|22|Graham Hill|Lola-Ford|52|+ 1 Lap|21||
|11|3|Jody Scheckter|Tyrrell-Ford|52|+ 1 Lap|9||
|12|16|Tom Pryce|Shadow-Ford|51|Transmission|14||
|13|23|Rolf Stommelen|Lola-Ford|51|+ 2 Laps|19||
|14|2|Jochen Mass|McLaren-Ford|50|+ 3 Laps|13||
|Ret|8|Carlos Pace|Brabham-Ford|46|Engine|2||
|NC|20|Arturo Merzario|Williams-Ford|44|Not Classified|20||
|Ret|27|Mario Andretti|Parnelli-Ford|27|Transmission|10||
|Ret|14|Mike Wilds|BRM|24|Engine|22||
|Ret|5|Ronnie Peterson|Lotus-Ford|15|Engine|11||
|Ret|21|Jacques Laffite|Williams-Ford|15|Gearbox|17||
|Ret|30|Wilson Fittipaldi|Fittipaldi-Ford|12|Accident|23||
|DSQ|18|John Watson|Surtees-Ford|6|Disqualified|15||
|DNS|17|Jean-Pierre Jarier|Shadow-Ford|0|Transmission|1||

Question: how many fewer laps did carlos pace complete than jochen mass?
Answer: 4